MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
A. Oxidation
Explanation
Oxidation is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Reddish-Purple
Explanation
Reddish-Purple is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. 21% Oxygen approximately
Explanation
21% Oxygen approximately is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Nitrogen Dioxide
Explanation
Nitrogen Dioxide is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Vitamin B12
Explanation
Vitamin B12 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Charles Law
Explanation
Charles’s law, or the law of volumes, was found in 1787 by Jacques Charles. It states that, for a given mass of an ideal gas at constant pressure, the volume is directly proportional to its absolute temperature, assuming in a closed system.
Correct answer
A. 17.031 g/mol
Explanation
17.031 g/mol is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. 04
Explanation
In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles. Commonly the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart.
Correct answer
C. Neptune
Explanation
Neptune is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Amonia solvay process
Explanation
Amonia solvay process is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.